/Engine/Source/Editor/SkeletalMeshEditor/Public/SkeletalMeshEditorSubsystem.h
Regenerate LODs of the mesh
true if succeed. If mesh reduction is not available this will return false.
static bool RegenerateLOD ( [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * SkeletalMesh, int32 NewLODCount, bool bRegenerateEvenIfImported, bool bGenerateBaseLOD )